On Jul 9, 2006, at 9:26 PM, Nancy Anthracite wrote:
It's short for $TEST. This variable is very much like the test register in assembly language programming. Try the following (note the two spaces before the WRITE): I 1>0 W $T I 0>1 W $T At any rate, when you exit an OPEN command, $TEST tells you whether or not the OPEN succeeded. The Kernel Device Handler (^%ZIS and relatives) sets a variable called POP to indicate success or failure, but at the MUMPS level, you need to check $TEST. Gregory Woodhouse "Judge a man by his questions not his answers." --Voltaire |
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